#define MODEST_ACCOUNT_REMEMBER_PWD "remember_pwd" /* boolean */
#define MODEST_ACCOUNT_HOSTNAME "hostname" /* string */
#define MODEST_ACCOUNT_USERNAME "username" /* string */
+#define MODEST_ACCOUNT_USE_SIGNATURE "use_signature" /* boolean */
+#define MODEST_ACCOUNT_SIGNATURE "signature" /* string */
#define MODEST_ACCOUNT_URI "uri" /* string */
#define MODEST_ACCOUNT_PROTO "proto" /* string */